Energy Saving Trust experts see solid wall insulation as the biggest opportunity for the private rented sector, with nearly half of homes being suitable for this measure, which is approved to receive funding under the ECO as part of the Green Deal.

David Weatherall, housing strategy manager at the Energy Saving Trust, said: “This is a win-win situation for both landlords and tenants. Landlords get home improvements without the upfront costs, and tenants have warmer homes to live in.

“We have detailed information on what is happening with the UK’s housing stock – some of the leakiest in Europe – and where. We know which homes are likely to be rented privately, and which of those require energy efficiency upgrades that could benefit the landlord and their tenants. This helps ensure installers only target the homes most in need of energy efficiency improvements under the Green Deal.”